@book { DasGrabmalKaiserLudwigsdesBayerninderMnchenerFrauenkirche,
    title = "Das Grabmal Kaiser Ludwigs des Bayern in der Münchener Frauenkirche",
    author = "Eva {Starck-Ottkowitz}",
    year = "2015",
    publisher = "Diplom.de",
    address = "Hamburg, Deutschland",
    url = "https://m.diplom.de/document/287071"
}